premenstrual syndrome

常见例句

用作名词 (n.)

• What are typical premenstrual symptoms?
  经前综合症有甚麽症状？
• The female endocrine system is highly complex and medical experts still do not fully understand the chain of events that causes premenstrual symptoms.
  医学界已确定女性的身体会释放不同的贺尔蒙来控制生理周期，但是经前综合症的成因尚未完全掌握。
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